/*
 * Copyright 2014 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef SkPicturePlayback_DEFINED
#define SkPicturePlayback_DEFINED

#include "include/core/SkM44.h"
#include "include/core/SkPicture.h"
#include "include/private/base/SkNoncopyable.h"
#include "src/core/SkPictureFlat.h"

#include <cstddef>
#include <cstdint>

class SkCanvas;
class SkPictureData;
class SkReadBuffer;

// The basic picture playback class replays the provided picture into a canvas.
class SkPicturePlayback final : SkNoncopyable {
public:
    SkPicturePlayback(const SkPictureData *data) : fPictureData(data), fCurOffset(0) {}

    void draw(SkCanvas *canvas, SkPicture::AbortCallback *, SkReadBuffer *buffer);

    // TODO: remove the curOp calls after cleaning up GrGatherDevice
    // Return the ID of the operation currently being executed when playing
    // back. 0 indicates no call is active.
    size_t curOpID() const
    {
        return fCurOffset;
    }
    void resetOpID()
    {
        fCurOffset = 0;
    }

private:
    const SkPictureData *fPictureData;

    // The offset of the current operation when within the draw method
    size_t fCurOffset;

    void handleOp(SkReadBuffer *reader, DrawType op, uint32_t size, SkCanvas *canvas, const SkM44 &initialMatrix);

    class AutoResetOpID {
    public:
        AutoResetOpID(SkPicturePlayback *playback) : fPlayback(playback) {}
        ~AutoResetOpID()
        {
            if (fPlayback) {
                fPlayback->resetOpID();
            }
        }

    private:
        SkPicturePlayback *fPlayback;
    };

    using INHERITED = SkNoncopyable;
};

#endif
